Rod-packing.



PATENT'ED MAR. 31, 1908. v

0. J. GARLOGK. ROD PACKING. APPLIOATIQN PILED DEU. 4, 1907.

Inventar I l I 1 I UNITED STATES PATENT OFFICE.

OLIN .T. 'GARLOCK, OF PALMYRA, NEW YORK, ASSIGNOR TO THE GARLOOK PACKING COM- PANY, OF PALMYRA, NEW YORK.

ROD-PACKING.

Specification of Letters Patent.

Patented March 31, 1908.

To all whom it may concern: I

Be it known that I, OLIN J. GARLooK, of Palmyra, in the county of Wayne and State of New York, have invented a new and useful Improvement in Rod-Packing, which improvement is fully set forth in the following specification and shown in the accompanying drawings.

This invention relates to certain new and useful improvements in rod packing, and it pertains more particularly to heavy ring packing for piston rods designed more especially for use in heavy hydraulic work, as in packing the large slow-movin tubular piston rods of massive pumps emp oyed in exten sive water-supply systems of large or populous cities. These piston rods are anywhere from twenty-four to forty-eight inches more or less in diameter, and the packing is used in the ordinary stuffing box around the rod, the acking being saturated with a suitable lubrlcant before being put in place.

The present invention has for its objects among others to provide a simple and improved yet efficient packing embodying two adjacent members, one of which is of lead or analo ous material and the other of a compoun or stratified strand, the adjacent faces of which are oppositely inclined, the natural tendency of the latter being to press outwardly against the inner wall of the stufi mg box, While the normal tendency of the leaden member is to ress against the piston rod, these two members tending to move in opposite directions. Interposed between the arallel faces of the above mentioned mem ers is a braided member of strands of flax having numerous interstitial s aces which hold oil as a lubricant for the who e body of the packing.

A further object is to provide a construction in which the parts of the lead member are a little less than semicircles leaving spaces between them so that as they wear away by the action of the rod they will compress into similar external diameters and so constantly be in contact with and wear against the rod. If the ends of these parts of the lead member abutted when first put in the box, such contraction could not take place.

Other objects and advantages of the invention will hereinafter appear and the novel features thereof will be particularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form a part of this specification, and in which Figure 1 is a plan of the flax member of the packing with parts broken away and longi- I tudinally sectioned along successive parts through parallel lines indicated by the dotted lines a, b, c in Fig. 3 so as to show the, inner longitudinal strands. Fig. 2 is a side elevation of the flax member as indicated by the arrow in Fig. 1, parts being broken away and longitudinally sectioned successively through planes indicated by dotted lines d, c, fin Fig. 3. Fig. 3 is a central longitudinal section of a portion of a stuflin box and cross section of the contained pac ring, With an adjacent portion of the tubular piston rod in elevation, some parts being broken away. Fig. 4 is a side elevation of short portions of the metal and compound members of the packing, relatively placed as in use, with parts broken away. Fig. 5 is a cross section, on a reduced scale, of the rod, showing a packing rin in i Referring to the drawings 1 designates a tubular piston rod and 2 a portion ofan ordinary stuffing box in connection with which my improved packing is designed to be used.

The packing is made into rings and not coils, it consisting of three principal members 3, 4 and 5. The member 3'is of lead or analogous material practically triangular in cross section, the section being a right angled triangle with the sharp angle slightly clipped, as seen at 6 in Fig. 3, the opposite or broader side 7 of the lead bearing against the rod 1, as seen in said figure.

The member 4 is composed of alternated layers of cotton duck and rubber, it being formed with an inclined or slant face 8, as

seen in Fig. 3, to meet the inclined orslant face 9 of the lead. member, so that the two taken together form a rectangle, as clearly shown in Fig. 3, it being evident that the broad side 10 .of the member 4 bears a ainst the inner wall of the stuffing box wh' e the narrow side 11 thereof bears against the outer face of the piston rod. When thus ut together, the tendency of the lead memher 3 is to slide inward toward and thus be constantly in contact with the rod, the firm,

hard strand 4 of the cotton and rubber Iconstituting a sliding base for said lead member. The remaining member 5 consists of five longitudinal strands, 12, 13, 14, 15 and 16 of flax woven into the member, as shown in Figs. 1, Zand 3, the strand 16 being in the center with the twin strands 12 and 13 above and the similar strands l4 and 15 below; All of these strands together with the wra ping or inclosing strands 17 are of course i'lax and porous or with numerous interstitial spaces which serve to hold the oil as a lubricant spaces are not especially formed but result from the coarse nature of the flax fiber and the manner of braiding the same.

The fibrous members 4 and 5 are made inlong strands or ro es originally, and cut into acked in any given case, the same with the ead member except that in use the latter is formed in two semicircular pieces, as seen 7 in Fig. 5, the two parts of which lead memher being purposely made a little short of semicircles, as clearly seen in Fig. 5, leaving rod, they will compress into similar external diameters and so constantly be in contact with and wear against the rod. If their ends abutted when first put into the box, this contraction could not take place; but thespaces 18 permit of such action. Usually in filling the stufling box with my improved packing, and particularly when used in connection with rods of large diameter, say three or four feet, the three members of my packing are put into the box separately. The stratified strand 4 of'cotton or rubber is laid in at the bottom 19 of the box in a single rin with its ends closely abutting, with its inc ined face uppermost, as seen clearly in Fig. 3. Then the lead member 3 isput in in two semicircular pieces, as seen' in Fig. 5, with their inclined faces against the member 4, as shown in Fig. 3. Then aring of the flax mem her 5 is put in place on top of the lead member, this member 5 like the member 4 being a single ring with its ends abutting, as shown at the division line 20 in Fig. 5. Thebox is filled from bottom to top with these members in the order shown in Fig. 8, all being comressed by the ordinary gland used in stufling oxes. In lacing these rings or members in the stuffing ox not much regard need be had as to where the joints between the ends of the rings come, only that these end joints do not come together.

The lead member being much heavier than the others causes it to, automatically seek the lowest plane so that it constantly presses against the outer face of the piston rod. Sometimes, as where the piston rods are comparatively small in diameter, the members of the packing are formed and put to,

forth. This is merely for convenience in for the whole body of packing; these littlehandling, the cotton casing or wrapper'being only for temporary use and wearing; aWaV ,quickly when rubbed or abraded by the: :piston rod, allowing the pieces of lead to come into contact with the rod as above described.

lengths for the ciameter of the rod to be It will be understood that in use the three members of the packing are free and disconnected fromeach other so as to have in.-

dependent movement.

Modifications in detail may be resorted to" without departing from the spirit of them-- avention or sacrificing any of its advantages. spaces 18 between their adjacent ends so t at as they wear away by the action of the What is claimed as new is:- l. A rod packing comprising a plurality of independent members free for movement. with relation to each other, one of'which is. of heavier material than the other oflike nature throughout and divided diametrically tate toward the piston rod which it surrounds,

a braided absorbent member resting on theheavier member to receive theless heavy member of the next upper packing ring; and a fibrous wrapping around said braided member.

2. A rod packing comprising a sectional ring of lead with an inclined. face, a ring of alternate layers of cotton duck and rubber with an inclined face, said inclined faces being opposed to each other whereby the" lead member will automatically gravitate toward the piston rod, said rings'having 611i-- larged bearings against the rod and a member of braided strands resting on said lead member to receive the cotton duck. and

rubber member next above adaptedto alt-- In witness whereof, I have hereunto set my hand this 23rd day of November. 1907', in the presence of two subscribing witnesses.

OLIN J. GARLOCK.

Witnesses:

J. H. L. GALLAGHER, FRANK P. HEINEMAN. 

